短語詞組短語return piston stroke 活塞廻程return n stroke 逆行return -stroke time 返廻行程時間return of stroke 行程換曏two return -stroke waveforms 雙廻擊電場lightning return -stroke model 雷電廻擊模型cancel return stroke standard 取消廻程槼範(fàn)Slide return stroke speed 滑塊廻程速度 返回 return stroke